US2587731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated chair
Assignee: Individual
•
Filing: 1950-06-19
•
Granted: 1952-03-04
•
Expires: 1970-06-19
Abstract
No abstract record available.
Inventors
- 👤 Frank J Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:19
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; A; A47; A47C; A47C7/00; A47C7/62; A47C7/72; A47C7/725; A47C7/74; H05B2203/00; H05B2203/014; H05B2203/022; H05B2203/029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR429326A
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US1669683A
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GB312825A
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US1817277A
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US1957401A
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US1936960A
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US1989582A
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FR782410A
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US2094575A
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US2259712A
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US2185692A
Cited
US2461432A
Cited
US2400790A
Cited
US2493067A
Cited
US2493303A
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US2488964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |